Alien Trilogy

These include killing a certain number of enemies, finding items or activating switches. Enemies include everything the alien life cycle provides: facehuggers, chestbursters, warrior aliens, dog aliens (from Alien³) and alien queens, one of which waits in the final mission of every section. In addition to the Aliens, you also have to fight employees of the Company, who have either been infected by the aliens and are beyond saving or who actively want to obstruct your mission. Weapons to be used include pistol, shotgun, pulse rifle, flame thrower and smart gun. Ammunition, health upgrades and other useful items are scattered throughout the levels. Hidden areas may be uncovered by using explosives like grenades and seismic charges. An auto mapping system helps in not getting lost, night goggles and shoulder lamps (running on battery power) allow you to see in the dark and the motion tracker tells you where your enemies are - but only if they are moving.